Showing 121 - 140 results of 1,283 for search '"Ordovician"', query time: 0.10s Refine Results
  1. 121
  2. 122
  3. 123

    The earliest leperditicope arthropod: a new genus from the Ordovician of Spitsbergen by Williams, M, Siveter, D

    Published 2008
    “…It occurs at a stratigraphical level low in the Floian Stage of the Early Ordovician, and below rocks bearing graptolites of the Pendeograptus fructicosus Biozone. …”
    Journal article
  4. 124

    Scottish Ordovician ostracodes: a review of their palaeoenvironmental, biostratigraphical and palaeobiogeographical significance by Williams, M, Floyd, J, Miller, C, Siveter, D

    Published 2001
    “…Ostracodes have a wide geographical distribution in the Ordovician of Scotland. They are known from the Southern Uplands, the Girvan district, the Highland Border region and the Inner Hebrides. …”
    Conference item
  5. 125
  6. 126
  7. 127

    Comparative geochemical study on Furongian–earliest Ordovician (Toledanian) and Ordovician (Sardic) felsic magmatic events in south-western Europe: underplating of hot mafic magmas linked to the opening of the Rheic Ocean by J. J. Álvaro, T. Sánchez-García, C. Puddu, J. M. Casas, A. Díez-Montes, M. Liesa, G. Oggiano

    Published 2020-12-01
    “…<p>A geochemical comparison of early Palaeozoic felsic magmatic episodes throughout the south-western European margin of Gondwana is made and includes (i) Furongian–Early Ordovician (Toledanian) activities recorded in the Central Iberian and Galicia–Trás-os-Montes zones of the Iberian Massif, and (ii) Early–Late Ordovician (Sardic) activities in the Eastern Pyrenees, Occitan Domain (Albigeois, Montagne Noire and Mouthoumet massifs) and Sardinia. …”
    Get full text
    Article
  8. 128

    Bitumen and hydrocarbon generation potential of paleo-reservoirs in the Ordovician, south Ordos Basin by Chunlin Zhang, Fenjin Sun, Ruie Liu, Fudong Zhang, Hongping Xiao, Damao Wu

    Published 2010-12-01
    “…图9表2参13 Key words: Ordos Basin, Ordovician, bitumen, paleoreservoir, hydrocarbon generation potential…”
    Get full text
    Article
  9. 129
  10. 130

    Stable ocean redox during the main phase of the Great Ordovician Biodiversification Event by Álvaro del Rey, Christian Mac Ørum Rasmussen, Mikael Calner, Rongchang Wu, Dan Asael, Tais W. Dahl

    Published 2022-09-01
    “…The period leading up to the Great Ordovician Biodiversification Event was characterised by stable marine anoxic zones with a substantial increase in atmospheric oxygen occurring only after this, according to uranium isotope analyses of marine carbonates from southern Sweden…”
    Get full text
    Article
  11. 131
  12. 132

    Paleoenvironment of the Lower Ordovician Meitan Formation in the Sichuan Basin and Adjacent Areas, China by Meihua Yang, Yinhui Zuo, Xiaodong Fu, Lei Qiu, Wenzheng Li, Jianyong Zhang, Ziyun Zheng, Jiazhen Zhang

    Published 2022-01-01
    “…The paleoenvironment of the Lower Ordovician Meitan Formation of the Sichuan Basin and its adjacent areas is lacking, restricting the oil and gas exploration of the Ordovician in the Sichuan Basin and its adjacent areas. …”
    Get full text
    Article
  13. 133

    The Characteristics and Tectonic Significance of Ordovician Siliceous Rocks in the Yushigou Area, North Qilian by LU Jing-yun, WANG Zhi-li, DU Li-ke, ZHANG Hong-yuan, XU Wei-jun, WANG Yuan-qun

    Published 2014-09-01
    “…Some scholars believe that the north Qilian formed the matured ocean and the trench-arc-basin system in the early Ordovician period, while others insist that it just continued its rift valley evolution. …”
    Get full text
    Article
  14. 134

    Novel marrellomorph moulting behaviour preserved in the Lower Ordovician Fezouata Shale, Morocco by Harriet B. Drage, David A. Legg, Allison C. Daley

    Published 2023-08-01
    “…We describe exuviae from a marrellid marrellomorph found abundantly in the Early Ordovician Fezouata Shale Lagerstätte of Morocco, which allow a novel reconstruction, the second ever, of marrellid moulting behaviours. …”
    Get full text
    Article
  15. 135
  16. 136

    ACRITARCHS AND CONODONTS FROM THE CAMBRO - ORDOVICIAN FURUHÄLL (KÖPINGSKLINT) SECTION (ÖLAND, SWEDEN) by GABRIELLA BAGNOLI, SVEND STOUGE, MARCO TONGIORGI

    Published 2020-03-01
    Subjects: “…Acritarchs; Conodonts; Biostratigraphy; Taxonomy; Cambrian; Lower Ordovician; Öland; Sweden.…”
    Get full text
    Article
  17. 137

    Hirnantian (latest Ordovician) bio- and chemostratigraphy of the Stirnas-18 core, western Latvia by Hints, Linda, Hints, Olle, Kaljo, Dimitri, Kiipli, Tarmo, Männik, Peep, Nõlvak, Jaak, Pärnaste, Helje

    Published 2010-03-01
    “…Integrated study of the uppermost Ordovician Porkuni Stage in the Stirnas-18 core, western Latvia, has revealed one of the most complete Hirnantian successions in the eastern Baltic region. …”
    Get full text
    Article
  18. 138
  19. 139

    Natural gas accumulation and models in Ordovician carbonates, Ordos Basin, NW China by Yanru GUO, Jinhua FU, Xinshan WEI, Wanglin XU, Liuyi SUN, Junbang LIU, Zhenyu ZHAO, Yueqiao ZHANG, Jianrong GAO, Yanling ZHANG

    Published 2014-08-01
    “…According to sedimentary environment, sources, hydrocarbon accumulation characteristics and gas reservoir types of the Ordovician in the Ordos Basin, the Ordovician carbonate rocks in the basin have good gas accumulation conditions. …”
    Get full text
    Article
  20. 140